Electric telephone-switch.



No. 790,812. PATENTED MAY 23, 1905. G. F. ARCHER.

ELECTRIC TELEPHONE SWITCH.

APPLIOATION FILED 001215, 1903.

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1 I? L i f Z WITNESSES: g INVENTOR k 2 Cieoryeiflrchr k BY ATTORNEY PATENTED MAY 23, 1905.

G. F. ARCHER.

ELECTRIC TELEPHONE SWITCH.

APPLICATION FILED 00115, 1903.

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WITNESSES: INVENTOR George Ffircfier ATTORNEY PATENTED MAY 23, 1905.

G. P. ARCHER.

ELECTRIC TELEPHONE SWITCH.

APPLICATION FILED 001. 15, 1903.

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INVENTOR GearyeFflrcfier WITNESSES ATTORNEY I f M J 1 @J UNITED STATES PATENT OFFICE.

Patented May 23, 1905,

GEORGE F. ARCHER, OF NEW YORK, N. Y.

ELECTRIC TELEPHONE-SWITCH.

SPECIFICATION forming part of Letters Patent No. 790,812, dated May 23, 1905.

Application filed October 15,1903. Serial No. 177,166.

To all whom it may concern.-

Be it known that I, GEORGE F. ARCHER, a citizen of the United States, residing at Manhattan borough, in the city of New York, in the county and State of New York, have invented new and useful Improvements in Electric Telephone-Switches, of which the following is a specification.

This invention relates to means for simply or readily making and breaking the contacts required; and the invention resides in the novel features of construction set forth in the following specification and claims and illustrated in the annexed drawings, in which Figure l is a face View of a switchboard. Fig. 2 is a section along as m, Fig. 1, showing the device at rest or all the contacts or circuits broken. Fig. 3 is a view like Fig. 2, showing a contact moved to ringing or call circuit position. Fig. & shows a contact in talking-circuit. Fig-5 is a section along w w, Fig. 1. Figs. 6 and 7 are diagrams to show ringing and talking circuits, respectively. Fig. 8 shows a modification. Fig. 9 is a section along 3/ y, Fig. 8. Fig. 10 is a vertical section of Fig. 9 along 1 y, Fig. 8. Fig. 11 is another modification. Fig. 12 is a section along 2 2, Fig. 11. Fig. 13 shows a further modification.

In the drawings is shown a movable base a. This base is what might be called balancedthat is, so long as the receiver is off the hook the base is movable,.but arranged to remain in the position to which it is moved until positively moved again. When this base or plate is placed horizontally, it will naturally stay in the position to which it is shifted. If placed in another position, as vertical, a counterweight or spring or friction can be applied to prevent drop or automatic movement. In Fig. 1 is shown a spring I), which is adapted to press or hold the base against drop or movement unless positively shifted. At or upon the base is shown a signal-wire terminal or strip 0 and a catch d, forming a talking-wire terminal. An incline is shown at c and a circuit-closer or contact-spring at f. When the closer f is pressed from its open or clear position to the signal-terminal or base a and strikes the inclined face of catch or book (Z, it

shifts base a to clear or pass the hook; but before reaching strip 0 such closer f strikes the incline a, Fig. 3, and shifts the base back, so that when the closer f is allowed to return or spring back it is arrested by the catch part of hook d to make a talking-circuit, Fig. 4. By the incline of hook (Z and the oppositelydirected incline e the base is thus positively shifted to clearing and engaging position, as described. When the receiver g is on its hook or switch-lever h, it will be impossible to lock the contact-springs f, as this lever lb, suitably fulcrumed, as at 2', will move or hold base a to clearing or release position. This lever has a loose connection with base a, such as a pin-and-slot connection, the pin being indicated at in. I/Vhen the receiver is taken off the hook, the pin in moves in the slot as the hook-lever 7i swings; but the base (0 remains H f to spring open or clear.

A number of circuit-closers can be applied, as also a number of catches d and inclines 6; but the operation of one circuit-closure explains the others. As a contact-spring is pushed by its button Z it comes to the signalstrip 0 and when released is engaged by the talking-catch (Z. When a series of circuitclosers f is employed and one or another should be in talking-circuit or caught by its hook d and anothercontact f is depressed, the second contact on striking the incline of its hook (Z will shift base a to release the closed contact before the second contact closes its circuit.

When in a series, hooks d and inclines a can be formed of one piece or fixed to one another, and, if desired, the inclines c and base of hook or catch (Z could be formed with insulated faces or portions.

, The diagrams explain the operation. If station No. 2 wants to call station N o. 1, the person at station No. 2 presses the contact f, Fig. 6, to signal-wire terminal 0, and the current runs from battery M, along conductors 8 and 9, to contacts 0 f at station N0. 2 and to conductor 1 and lever 72 and conductor 2 at station No. 1 to its bell 4 and thence by conductors 5 and 6 to. battery. When called and the receiver at station No. 1 as also that at station No. 2 are taken off the hook, Fig. 7, the circuit includes receiver 9 at station No. 2 to wire 10 and battery N to contacts d and f and Wire 1 to the receiver-hook h at station No. 1 and wire 12 to receiver and transmitter at station No. 1 and along wires 5 and 6 along 16 to receiver at station No. 2.

In the drawings only two stations are shown; but of course any number of stations can be wired or made to connect with any other station by this system.

The receiver hook or lever it as it is actuated by or released from the weight of the receiver also serves as a switch or makes and breaks contact as usually known in telephone apparatus, and, as already explained, this weight-actuated lever 7L serves as a holding or moving portion for base a independent of the switch portions f (Z, which also actuate the base as they come to interlock.

In the modification shown in Figs. 8, 9, and 10 the contacts instead of being springs are in form of blocks f. The buttons Z, with contacts f, are in this case moved to clearing position by restoring-springs m. The receiver or hook-lever it instead of moving base a by pin-an'd-slot connection has a spring-arm 7" When the hook-lever rises or moves on the removal of the'receiver, the spring is glides or rubs past the edge or curve portion of an inclined face 11.; but when the receiver is hung up and the lever 71/ swings downward the arm thrusts against the inclined face a on base a and slides or moves this plate to release the contacts.

In Figs. 11 and 12 the base a is shown of circular form and adapted to oscillate about a pivot or center instead of moving back and forth rectilinearly. The form of device of Fig. 11 is convenient for desk use, but is not confined thereto. A pin and slot can be arranged to limit the oscillation of this base. Such a pin and slot are shown in Fig. 11. In this construction, the same as in Fig. 8, when the receiver is taken off hook it the springarm la in rising glides along the edge of the inclined face a; but when the arm It returns or moves in the opposite direction and buts or pushes against the face a it tends to rotate or swing the base. The operation is the same as already described. The receiver is taken off the hook, but the base as yet remains at rest. Then a button is pushed, and by its action on a hook and incline the base is oscillated to bring the parts to engaging position. On restoring the receiver to the hook the base is shifted to release the button, as before; but instead of the base reciprocating rectilinearly, as in Fig. 8, the base of Fig. 11

oscillates or swings about a center.

In Fig. 13 one button Z is shown adapted to actuate two circuit-closers or springs f for the current to be readily led off ateither side of the apparatus or for other reasons.

What I claim as new, and desire to secure by Letters Patent, is-

1. Asignal-wireterminal, acatch forming a talking-wire terminal, a movable base or support for the catch, an incline on the base, and a contact or circuit-closer made to contact with the catch and incline to move the catch to releasing and to engaging position.

2. A movable base, a catch and incline on the base, combined with a contact made to engage the catch and incline to move the base for setting the catch in releasing and engaging position.

3. A movable base, a catch and incline on the base, combined with a contact made to engage the catch and incline to move the base for setting the catch in releasing and engaging position, and a weight-actuated lever to move the base with the catch to releasing position.

4:. A movable base which is balanced or made to remain in the position to which it is moved, a circuit-closer, and a catch and incline adapted to be engaged by the circuit-closer to positively move the base with the catch to releasing and engaging position. v

5. A movable base which is balanced or made to remain in the position to which it is moved, a circuit-closer, and circuit-terminal hooks each provided with a front and rear inclined face to move the base into release and engaging position as the front or rear incline is engaged by the circuit-closer.

6. A movable base, a catch and incline on the base, a circuit-closer made to engage the catch and incline to move the base for setting the catch in releasing and engaging position, and a weight-actuated lever having a loose connection with the base and made to move the base to releasing position.

7 A signal-wire terminal and a talking-wire terminal, a contact, and a movable base, said contact being made to positively move the base to engage and release the contact and said contact being arranged to break engagement with one terminal before engaging the other.

8. A movable or sliding base, and a number of contacts having oppositely-facing inclines respectively made to positively move the base to engage and release contacts.

9. A movable or sliding base provided with switch members, a contact made to engage said members'and adapted to positively move the base to engaging and release position, and a weight-actuated lever which serves to move the base when moving in one direction and to permit it to remain stationary when moving in the other direction.

10. In aswitch the combination with ashifting member made to remain in any position to which it is set, of a cooperating member adapted to move toward and away from the shifting member, the latter being provided with means whereby the movement of the cooperating member toward it gives it shifting movement and with means independent of the means by which it is moved for causing said members to release.

11. In a switch, a movable base having a series of catches and inclines, and a series of contacts made to engage the catches and inclinesto positively move the base to release and engaging position, the parts being so arranged that a contact on moving to engagement will release another contact that may be in engagement.

12. In a telephone apparatus, a shifting plate which is balanced or made to remain in position in which it is moved combined with inclines, a retaining-catch, and a contact member adapted to engage with its respective incline and to cause the catch to move to engaging position. v

13. In a telephone apparatus, the combination with a longitudinally-movable interlocking switch member adapted to remain in the position to which it has been moved,of another switch member adapted to be engaged thereby, a contact to which a calling-circuit is connected, a talking-circuit connected to said interlocking member,connections from the other member of the switch to both the talking and calling circuits, means for operating the lastnamed member so as to close the calling-circuit while clear of the talking-circuit and to cause the two parts of the switch to interlock so that the talking-circuit is held closed, and a lever for operating the other member of the switch to disengage the parts said lever having a loose or pin-and-slot connection with such switch member.

14. In a switch, the combination with a longitudinally-moving member of a cooperating member mounted to move toward and away from the longitudinally-movable member, the longitudinally-movable member being provided with bevels whereby the movement of the cooperating member toward it gives it its longitudinal movement and with a holding portion independent of the means by which GEORGE F. ARCHER.

Witnesses:

W. G. HAUFF, OHAsE. POENSGEN. 

